vulnerability

Ubuntu: (Multiple Advisories) (CVE-2017-18509): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Aug 13, 2019
Added
Oct 1, 2019
Modified
Nov 7, 2024

Description

An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inet_csk_listen_stop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAP_NET_ADMIN capability) or after namespace unsharing. This occurs because sk_type and protocol are not checked in the appropriate part of the ip6_mroute_* functions. NOTE: this affects Linux distributions that use 4.9.x longterm kernels before 4.9.187.

Solution(s)

ubuntu-upgrade-linux-image-4-4-0-1059-kvmubuntu-upgrade-linux-image-4-4-0-1095-awsubuntu-upgrade-linux-image-4-4-0-1123-raspi2ubuntu-upgrade-linux-image-4-4-0-1127-snapdragonubuntu-upgrade-linux-image-4-4-0-165-genericubuntu-upgrade-linux-image-4-4-0-165-generic-lpaeubuntu-upgrade-linux-image-4-4-0-165-lowlatencyubuntu-upgrade-linux-image-4-4-0-165-powerpc-e500mcubuntu-upgrade-linux-image-4-4-0-165-powerpc-smpubuntu-upgrade-linux-image-4-4-0-165-powerpc64-embubuntu-upgrade-linux-image-4-4-0-165-powerpc64-smpubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-powerpc-e500mcubuntu-upgrade-linux-image-powerpc-smpubuntu-upgrade-linux-image-powerpc64-embubuntu-upgrade-linux-image-powerpc64-smpubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragonubuntu-upgrade-linux-image-virtual
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